I lived in Madison from 1989 until 2008 and my wife actually raised money for the university for a number of years. From 1986 until 1990, they didn't win more than 3 games in a season. Average attendance dropped from around 68,000 to less than 42,000. Tickets to home games were easy to get, even if you didn't have a connection.
Starting with the 1993 season, when the Badgers started winning again, attendance shot up and tickets became much harder to get.